Correct `pyproject.toml` build-backend specification

[nchepanov]

Currently:

graphql-core/pyproject.toml

Lines 54 to 56 in 7d826f0

	[build-system]
	requires = ["poetry>=1,<2"]
	build-backend = "poetry.masonry.api"

According to https://python-poetry.org/docs/pyproject/#poetry-and-pep-517

If your pyproject.toml file still references poetry directly as a build backend, you should update it to reference poetry_core instead.

Should be updated to,

[build-system]
requires = ["poetry_core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

This will significantly speed up the package installation process, since the entire poetry dependency cone is currently being installed during isolated build per PEP517.

I can submit a PR if no objections.

[KingDarBoja]

Good catch, feel free to submit a PR 🚀

[Cito]

Thanks for reporting. This was fixed in add666f and will be available in the upcoming release (soon).

[Cito]

Version 3.1.3 with this fix has now been released.